Rucksack



FIG. 1 is a bottom plan view of a rucksack showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof, with the cover strap shown partially removed for ease of illustration only, the undisclosed left side being a mirror image;

FIG. 6 is a rear perspective view thereof; and,

FIG. 7 is a front perspective view thereof, with the cover strap and sack portion shown in an opened position.

The broken lines shown in all views represents conventional stitching. 

The ornamental design for a rucksack, as shown and described. 